Question

Calculate emf of cell at 25?C Cell notation $M\left|M^{2+}_{0.01}\right|\left|M^{2+}_{0.00001}\right|M$ If value of E is 4 volt (Given $\frac{RT}{F}$ in 10 = 0.06)

• A. 3.94 Volt
• B. 4.06 Volt
• C. 2.03 Volt
• D. 8.18 Volt

Answer 1

Answer: (A)

3.94 Volt

Answer 2

$E=E^{0}-\frac{0.059}{2}$ log $\frac{10^{-4}}{10^{-2}}$ $E=4-0.03$ log $10^{-2}$ $\quad$ $\quad$ $\quad$ $4-0.06=3.94$